Hydrochloric Acid → (10H-Pyrazino[2,3-b][1,4]benzothiazin-8-yl)acetamidine hydrochloride
Reaction equation
[N:1]1[C:10]2[NH:9][C:8]3[CH:11]=[C:12]([CH2:15][C:16]([NH2:18])=[NH:17])[CH:13]=[CH:14][C:7]=3[S:6][C:5]=2[N:4]=[CH:3][CH:2]=1.[ClH:19]>CO.C(OCC)(=O)C>[ClH:19].[N:1]1[C:10]2[NH:9][C:8]3[CH:11]=[C:12]([CH2:15][C:16]([NH2:18])=[NH:17])[CH:13]=[CH:14][C:7]=3[S:6][C:5]=2[N:4]=[CH:3][CH:2]=1Participants
5
Procedure
(10H-Pyrazino[2,3-b][1,4]benzothiazin-8-yl) acetamidine was dissolved in a small amount of methanol and a solution of hydrogen chloride in ethyl acetate was added thereto under ultrasonication. Thus, the title compound was obtained almost quantitatively as the precipitated orange crystals.